package com.itzh.netty.http;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import io.netty.util.CharsetUtil;

import java.net.URI;

public class TestHttpServerHandler extends SimpleChannelInboundHandler<HttpObject> {
    @Override //读取客户端数据
    protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
        if(msg instanceof HttpRequest){
            System.out.println("msg 类型="+msg.getClass());
            System.out.println("客户端地址="+ctx.channel().remoteAddress());

            HttpRequest httpRequest = (HttpRequest) msg;
            URI uri = new URI(httpRequest.uri());
            if("/favicon.ico".equals(uri.getPath())){
                System.out.println("你请求了 favicon.ico 不做响应");
                return;
            }

            //回复信息给浏览器
            ByteBuf content = Unpooled.copiedBuffer("hello ，我是服务器", CharsetUtil.UTF_8);
            //构造一个Http的响应
            FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK,content);
            response.headers().set(HttpHeaderNames.CONTENT_TYPE,"text/plain;charset=utf-8");
            response.headers().set(HttpHeaderNames.CONTENT_LENGTH,content.readableBytes());

            //将构建好的response 返回
            ctx.writeAndFlush(response);
        }
    }
}
